The United States has 59 National Parks. All of these parks have different beauty between each other. The oldest is Yellowstone (1872), and the newest is Pinnacles (2013). Each National Park has a 4 digit “Alpha Code.” The Alpha codes are made up of the first four letters of the park name. But if the park has more than one word, it takes the first two letters of the first two words. But there are some exceptions.
Examples:
1 word: Yosemite - yose
2 word: Petrified Forest - pefo
2+ word: Black Canyon of the Gunnison - blca
Exception: Carlsbad Caverns - cave
I will hide a geocache to honor all of these parks. I will do 6 groups of 10 caches (Actually 5 groups of 10, and 1 group of 9). Each of these are a puzzle with 6 questions.
I used Wikipedia for this information, as it gives it all on one page. Also say in your log if you have been to this park. If you have, please post pictures.
The final container is at: N 37° 59.ABC W 122° 09.DEF
A. The Alatna River is A3 miles long
B. The coordinates of the park are: 67°B7’N 153°18’W
C. It is the _______ most National Park in the United States
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Northern 8
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Southern 2
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Eastern 3
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Western 6
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Central 7
D. It is the #D largest National Park in the National Park service
E. The Brooks Range has seen repeated glaciation, with the most recent called the Itkillik glaciation from about 2E,000 years ago to roughly 1500 to 1200 years before the present
F. The park headquarters are in this city (Number of letters in city name -1)

You can validate your puzzle solution with certitude.
Thanks to Carlotta P for beta testing this puzzle!